+Other solutions like [Hiss](http://collect3.com.au/hissapp/) are okay, but a actually a weird hack with a lot of down sides. So while waiting for Growl 2 (which hopefully will support the Notification Center) why not use the current Growl with a plugin that does the necessary. All as a 1st class citizen in the Growl.

+- Double click it & Growl should take the install process from there.

+

+

+##Downsides

+

+All the notifications are still sent by Growl, so they all show the Growl icon. I'm curious how Growl 2 will target that issue. Mountain Growl is showing the original application name in the subtitle though.